Abstract In this paper, multi-objective optimization (MOO) of Al2O3-water nanofluid flow in microchannel heat sinks (MCHS) with triangular ribs is performed using Computational Fluid Dynamics (CFD) techniques and Non-dominated Sorting Genetic Algorithms (NSGA II). At first, nanofluid flow is solved numerically in various MCHS with triangular ribs using CFD techniques. Finally, the CFD data will...

This study proposes the use of symmetrical ogive-shaped ribs on walls microchannel heat sinks (MCHS) to improve their thermal performance with minimal pressure drop. The are arranged in three different configurations: attached all channel (MC-SAWR), side (MC-SSWR), and bottom wall (MC-SBWR). Numerical investigations conducted using laminar conjugate transfer model flow characteristics MCHS. aug...

A lot of work has documented the significance fluid flow uniformity on thermal-hydraulic performance microchannel heat sink (MCHS). The purpose this is to optimize shape inlet/outlet headers a MCHS improve distribution characteristics using back-propagation neural networks combined with genetic algorithm(GA-BP) as surrogate model. slanted edge inlet header defined quadratic parabola instead str...

This paper reports the influence of surfactant Triton X-100 on boron nitride nanotubes (BNNTs) nanofluid in non-optimized and optimized microchannel heat sink (MCHS) at 30 °C 50 °C. The MCHS performance was evaluated terms thermal resistance pressure drop, utilizing experimental thermophysical properties distilled water, a mixture water as base fluid, BNNTs weight concentration 0.001% into mode...

High-pressure drops characteristic of microchannel heat sinks (MCHS) is an issue that needs to be addressed reduce the size heat-removing devices in compact electronic devices. Supercritical carbon dioxide (s-CO₂) a suitable candidate being proposed as alternative coolant enhance cooling sink (MCHS), with high flux, due its favorable thermophysical properties near critical point. In this study,...

the aim of this paper is to enhance thermal performance of a microchannel heat sink by using nanoencapsulated phase change material (nepcm) slurry as a cooling fluid instead of pure fluid. a threedimensional model of a circular channel using water slurry of nepcm was developed. the results show a significant reduction in the mean fluid temperature along the channel and heat sink wall temperatu...

The aim of this paper is to enhance thermal performance of a microchannel heat sink by using nanoencapsulated phase change material (NEPCM) slurry as a cooling fluid instead of pure fluid. A threedimensional model of a circular channel using water slurry of NEPCM was developed. The results show a significant reduction in the mean fluid temperature along the channel and heat sink wall temperatu...

The present study experimentally investigated a new hybrid cooling scheme by combination of a microchannel heat sink with a micro-synthetic jet actuator. The heat sink consisted of a single rectangular microchannel measured 550 μm wide, 500 μm deep and 26 mm long. The synthetic jet actuator with a 100 μm diameter orifice was placed right above the microchannel and 5 mm downstream from the chann...

The microchannel heat sink (MCHS) has become the most relevant micro-heat exchanger for a small area in need of an effective high removal system. However, dissipation from microchips where MCHS is utilized—the microprocessor and microcontroller—is getting higher with sizes smaller. A more coolant needed to address increasing load microchip nanofluid, nanosized particles dispersed base fluid, am...

This study presents the numerical simulation of three-dimensional incompressible steady and laminar fluid flow and conjugate heat transfer of a trapezoidal microchannel heat sink using water as a cooling fluid in a silicon substrate. Navier-Stokes equations with conjugate energy equation are discretized by finite-volume method. We perform numerical computations for a range of 50 Re 600, 0.05W ...